Institution
Defence Science and Technology Organisation
Nonprofit•Canberra, Australian Capital Territory, Australia•
About: Defence Science and Technology Organisation is a nonprofit organization based out in Canberra, Australian Capital Territory, Australia. It is known for research contribution in the topics: Radar & Clutter. The organization has 2465 authors who have published 3856 publications receiving 90614 citations.
Topics: Radar, Clutter, Laser, Paris' law, Bistatic radar
Papers published on a yearly basis
Papers
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TL;DR: The survival of probiotic microorganisms including Lactobacillus acidophilus, LactOBacillus casei, Lactsobacilli rhamnosus and Bifidobacterium spp.
393 citations
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TL;DR: In this article, a series of nonvolatile amino acid salts with sterically hindered amine groups were investigated to determine their potential as direct replacements for monoethanolamine (MEA) in submarine-based CO2 scrubbers.
Abstract: In order to improve the efficiency of the carbon dioxide cycling process and to reduce amine emissions, a series of nonvolatile amino acid salts with sterically hindered amine groups were investigated to determine their potential as direct replacements for monoethanolamine (MEA) in submarine-based CO2 scrubbers. Absorption from atmospheres containing various levels of CO2 was measured to assess the total capacities and absorption rates of amine solutions. The regeneration rates and extent of CO2 desorption were established by heating these solutions. 13C NMR spectroscopy was used to establish reaction products and solution compositions after both absorption and desorption. Methyl groups substituted adjacent to the amine were found to increase solution absorption capacities but with an overall reduction in absorption rate. Poor absorption rates at low CO2 levels and precipitation problems would prevent the α-dimethylamines examined from being used in existing submarine scrubbers. These amines, however, sho...
354 citations
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TL;DR: A unique and radical song change in the song of humpback whales in the Pacific Ocean off the Australian east coast is recorded, which suggests that novelty may stimulate change in humpback whale songs.
Abstract: Humpbacks have picked up a catchy tune sung by immigrants from a distant ocean. The song patterns of humpback whales (Megaptera novaeangliae) depend on where they live, with populations inhabiting different ocean basins normally singing quite distinct songs. Here we record a unique and radical song change in the song of humpback whales in the Pacific Ocean off the Australian east coast. Their song was replaced rapidly and completely by the song of the Australian west coast population from the Indian Ocean, apparently as a result of the introduction of only a small number of 'foreign' singers. Such a revolutionary change is unprecedented in animal cultural vocal traditions and suggests that novelty may stimulate change in humpback whale songs.
353 citations
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TL;DR: In contrast to Northern Hemisphere studies, PPB (and Southern Hemisphere introductions in general) have significantly different suites of successfully invading taxa.
Abstract: Port Phillip Bay (PPB) is a large (1,930 km2), temperate embayment in southern Victoria, Australia. Extensive bay-wide surveys of PPB have occurred since 1840. In 1995/1996 the Commonwealth Scientific and Industrial Research Organization (CSIRO) Centre for Research on Introduced Marine Pests (CRIMP) undertook an intensive evaluation of the region with the aims of developing a comprehensive species list of native and introduced biota and contrasting previous bay-wide assessments with a current field survey in order to detect new incursions and discern alterations to native communities. Two methods were used to meet these aims: a re-evaluation of regional museum collections and published research in PPB to identify and determine the timing of introductions; and field surveys for benthic (infauna, epifauna and encrusting) organisms between September 1995 to March 1996. One hundred and sixty introduced (99) and cryptogenic (61) species were identified representing over 13% of the recorded species of PPB. As expected, the majority of these are concentrated around the shipping ports of Geelong and Melbourne. Invasions within PPB appear to be increasing, possibly due to an increase in modern shipping traffic and an increase in aquaculture (historically associated with incidental introductions); however the records of extensive biological surveys suggest that this may, in part, be an artefact of sampling effort. In contrast to Northern Hemisphere studies, PPB (and Southern Hemisphere introductions in general) have significantly different suites of successfully invading taxa. PPB is presented as one of the most invaded marine ecosystems in the Southern Hemisphere.
352 citations
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TL;DR: In this article, the problem of tracking a ballistic object in the reentry phase by processing radar measurements is studied and a suitable (highly nonlinear) model of target motion is developed and the theoretical Cramer-Rao lower bounds of estimation error are derived.
Abstract: This paper studies the problem of tracking a ballistic object in the reentry phase by processing radar measurements. A suitable (highly nonlinear) model of target motion is developed and the theoretical Cramer-Rao lower bounds (CRLB) of estimation error are derived. The estimation performance (error mean and standard deviation; consistency test) of the following nonlinear filters is compared: the extended Kalman filter (EKF), the. statistical linearization, the particle filtering, and the unscented Kalman filter (UKF). The simulation results favor the EKF; it combines the statistical efficiency with a modest computational load. This conclusion is valid when the target ballistic coefficient is a priori known.
346 citations
Authors
Showing all 2476 results
Name | H-index | Papers | Citations |
---|---|---|---|
Peng Shi | 137 | 1371 | 65195 |
Wayne Hu | 98 | 308 | 33371 |
Johan A. Martens | 88 | 720 | 28126 |
Maria Forsyth | 84 | 749 | 33340 |
Patrick M. Sexton | 75 | 350 | 21559 |
Xungai Wang | 68 | 675 | 19654 |
Michael D. Lee | 65 | 288 | 16437 |
Tanya M. Monro | 65 | 568 | 15880 |
Jan E. Leach | 64 | 222 | 13086 |
Raymond C. Boston | 63 | 454 | 15839 |
Adrian P. Mouritz | 61 | 284 | 14191 |
Christine E. A. Kirschhock | 52 | 231 | 9225 |
Robin J. Evans | 52 | 551 | 14169 |
Chun H. Wang | 51 | 331 | 8300 |
Branko Ristic | 48 | 253 | 10982 |